Old appointments are automatically deleted from my calendar and I don't know why or how to retrieve them. The auto-archive is off. I also checked to see if I could retrieve deleted items from an archived folder, but there is no archive folder. I dont' understand this. Are these appointments still there somewhere? How do I retrieve them? Thanks.

I think there is only 2 ways that appts could be removed from your outlook... (1) autoarchive and (2) someone else has access to your outlook and is deleting them... there may be another explanation but for the heck of me I cant think of any... You dont have any rules setup or anything that would automatically delete entries in the past do you?